When used with the "Redirect category shell" (Rcat shell) template:

This page is a redirect. The following categories are used to track and monitor this redirect: From category navigation: This is a redirect from a category that is used as a navigational aid to the target category, via a category navigation template such as {{Category series navigation}} or similar. Please do not remove the tag that generates this text (unless the need to use this category directly has been demonstrated) nor delete this page. This template should only be used on categories which have also been soft-redirected via {{Category redirect}}. When appropriate, protection levels are automatically sensed, described and categorized.

Template {{Redirect category shell}} may be used to add one or more rcat templates, along with their parameters and categories, to a redirect. For more information see the documentation page below.

When used by itself: